WO2003044376A1

WO2003044376A1 - Hollow chamber profile system for precision superstructures

Info

Publication number: WO2003044376A1
Application number: PCT/EP2002/013066
Authority: WO
Inventors: Helmut Kahl
Original assignee: Helmut Kahl
Priority date: 2001-11-22
Filing date: 2002-11-21
Publication date: 2003-05-30
Also published as: EP1446586B1; BR0206584A; ATE331896T1; MXPA04004875A; BRPI0206584B1; ES2268160T3; EP1446586A1; DE50207403D1

Abstract

The invention relates to a hollow chamber profile system for precision superstructures for gauges, measuring and control devices, and all types of devices, comprising first bore holes (9) which are arranged in a defined modular dimension, and second bore holes (11) which are arranged, in the same modular dimension, on a plane which is rotated by 90° in relation to the plane of the first bore holes (9), are used to receive connecting and/or fixing means with threaded parts (15) comprising screw threads (16), the diameter of said threaded parts corresponding to the bore holes (9, 11), and in which screws (17) are received. Said system has a rectangular or quadratic cross-section, with outer walls (3) comprising vertical bore holes (9, 11) which are perpendicular to each other. The hollow chambers (2) are formed by inner walls (4), by inner walls (4) and outer walls (3), or by outer walls (3), and the connecting and fixing means comprise guiding elements (13) and adapters (18, 18').

Description

Hollow chamber profile system for precision structures

The invention relates to a hollow chamber profile system for precision assemblies for gauges, measuring and testing devices and devices of all kinds, with first bores arranged in a certain pitch, with further second bores arranged in the same pitch on a plane rotated by 90 ° to the level of the first bores of connecting and / or fastening means with threaded threaded parts, the diameter of which corresponds to the bores and are received in the screws, with a rectangular or square cross section, the outer walls of which have the bores perpendicular to one another.

For precision assemblies, especially for gauges, measuring and testing devices, for example so-called "master trestles" in the automotive industry, there are special requirements for high-precision assemblies, exact repeatability of the boundary conditions, e.g. Defined high torsional and bending strength of the carrier components, minimal centering tolerances and high anti-rotation properties.

From DE 92 16 764 a cuboid tube with cross and fitting bores and with webs with recesses for connecting elements is known.

In order to meet the requirements mentioned at the outset, however, measures are required to increase the uneconomical Material thickness and thus the dimensions and weight result. The assembly of the divided connecting elements also proves to be disadvantageous, since they are only fully encompassed on one side in the bores, the other end resting in a recess in a web; This can lead to assembly problems in certain positions, in which the support surface is located, for example, at the top. Furthermore, the recesses of the webs cannot be produced particularly economically for the required precision, since several processing steps are required.

A further disadvantage is that the centering and anti-rotation properties are not present in the required high precision.

The object of the invention is to provide a profile system for precision superstructures which eliminates the disadvantages mentioned above and has the required precision while at the same time having improved economy in production, material and assembly, the required narrow tolerances for centering and anti-rotation properties being met.

This object is achieved in connection with the preamble of claim 1 according to the invention in that the hollow chambers are formed by inner walls and by inner walls and outer walls or by outer walls, and the connecting and fastening means have guide parts and fitting pieces.

The features of the subclaims represent advantageous developments of the task solution. The hollow chamber profile consists of regularly arranged hollow chambers of equal size, which are separated from one another by inner walls within outer walls which form a rectangular, preferably square cross section.

The inner walls are perpendicular to the outer walls and are connected to them. At the same time, they form a right-angled intersection in the middle of the profile.

The inside of the hollow chambers are provided with regular recesses, which reduces the wall thickness of these areas of the chamber walls. This creates regular areas of different wall thicknesses. The smallest wall thicknesses occur in the middle of the side walls of the hollow chamber. There are short transition areas towards the corners until the wall thickness reaches its greatest width. This results in partial areas with cross-sectional enlargements, which result from the fact that the outer walls meet in the corner areas, the inner walls meet in connection areas with the outer walls and the inner walls form intersection areas.

This creates a hollow chamber profile with high torsional and bending stiffness with low material consumption, low weight and small dimensions. The hollow chamber profile is expediently produced by an extrusion process, since this production achieves a high level of accuracy, since the wall thicknesses are the same in the sectional planes perpendicular to them.

The hollow chamber profile is further provided with holes in a certain grid dimension, the planes of which are perpendicular to one another. These holes are in the outer walls, with in boreholes aligned with them on the inner walls. Since these are aligned bores of the same diameter and the same tolerance, they can be manufactured in the simplest economical way with high precision at the same time.

In a particularly advantageous embodiment, the bores are only introduced at the points on the hollow chamber profile at which they are required in accordance with their intended use. It is thus possible either to provide the hollow chamber profile with holes completely, only in the edge regions and / or at suitable points.

The arrangement of the holes outside a grid dimension is also possible, which creates an advantageous extension of versatility.

It is also conceivable to use different bore diameters with appropriately adapted connecting, fastening and anti-rotation means.

The connecting, fastening and anti-rotation means consist of cylindrical thread and guide parts, screws and fitting pieces, the cylindrical thread and guide parts being received and fully encompassed by the outer wall and inner wall bores. They not only lie on one side in them, but are held radially in all directions, which advantageously simplifies and simplifies assembly.

Fastening is carried out using screws which are guided in the guide bores of the guide parts and screwed into the thread of the threaded parts. Between threaded parts and guide parts there are fitting pieces with guide holes for the screws Hollow chamber connections rectangular and cylindrical centering lugs, the right-angled centering lugs inserted into the hollow chambers and the cylindrical centering lugs are received by outer wall bores of the hollow chamber profile. A centering of the connecting and guiding parts and a particularly advantageous anti-rotation lock of the hollow chamber profiles with one another is hereby achieved.

The adapters are for non-rectangular ones

Provide hollow chamber profile connections, for example overlaps of two hollow chamber profiles, with two cylindrical centering lugs of different or the same diameter in accordance with the outer wall bore dimensions of the hollow chamber profiles. Here, too, an advantageous centering and anti-rotation of the hollow chamber profiles is achieved.

A further advantageous embodiment of the anti-rotation device of rectangular hollow chamber profiles results from the use of a preferred grid dimension of the bores, in which the arrangement of the cylindrical centering lugs on the rectangular centering lugs of the fitting pieces takes place off-center. This results in a large center distance between the cylindrical centering lugs, which increases the stability of the anti-rotation device.

It is expedient to provide the cylindrical centering shoulders of the fitting pieces with a cylindrical recess corresponding to the diameter of the guide parts, since this achieves a further advantageous form-fitting centering of the connecting and fastening means. Another advantageous embodiment provides for the guide bores of the guide parts to be provided with countersinks corresponding to the cylindrical heads of the fastening screws. A further improvement in the centering of the connecting and fastening means and the hollow profile is thereby achieved, with the adjacent, in particular the hollow chamber regions located above the screw head remaining free to accommodate further connecting means.

It is particularly advantageous that conventional screws are used instead of fitting screws.

In a further advantageous simple embodiment, the fitting pieces with a rectangular base body and cylindrical attachment are not required if less precision is required. They are then replaced by simple cylindrical or dowel pins, which are received in simple mounting holes. This function can also be performed by adapter sleeves or the like. Thus, even in such a case, a simple but advantageously effective anti-rotation lock of the hollow baffle profiles is made possible.

An exemplary embodiment according to the invention is explained below with reference to the drawings. It shows:

1 shows the cross section of a hollow chamber profile of a possible embodiment in an end view with two fitted pieces for securing against rotation,

2 shows a perspective view of a hollow chamber profile according to FIG. 1,

3 is a perspective view of two hollow chamber profiles • as a system with connection, fastening and anti-rotation means for a right-angled connection in an exploded view,

4 shows a perspective and partially cut-open view of the hollow chamber profile system according to FIG. 3 in the assembled state,

5 shows the view according to FIG. 4, but with different fitting pieces, and

Fig. 6 further possible embodiments of hollow chamber profiles.

1 shows the cross section of an exemplary embodiment of a hollow chamber profile 1. Four hollow chambers 2 are shown, which are arranged in a square cross section, formed by outer walls 3. The hollow chambers 2 are separated from one another by inner walls 4 which form a cross in the cross section shown.

The inside of the walls 3, 4 of the hollow chambers 2 have recesses 5 of the same size, which results in a reduction in the wall thickness of both the inner walls 4 and the outer walls 3 in each of these areas. Relative to these areas, this results in widening of the walls, especially in the Areas of the corners 6 of the outer walls 3, the connection areas 7, the inner walls 4 to the outer walls 3 and the intersection 8 of the inner walls 4th

In the exemplary cross-section shown, the recesses 5 are located in the middle of each inner side of a hollow chamber 2, whereby they have approximately half the length of an inner side, their depth is approximately 1/12 of their length, their edges are rounded and at an angle of approximately 45 °. All hollow chambers 2 have a symmetrical cross section of equal size.

1 further shows two fitting pieces 18 with a rectangular centering projection 20 and a cylindrical centering projection 19 arranged thereon, each of which is inserted with its rectangular centering projection 20 into the upper end region of a hollow chamber 2. They are arranged diagonally. The possibility of providing all hollow chambers 2 with fitting pieces 18 is not shown.

The cylindrical centering lugs 19 are arranged off-center of the rectangular centering lug 20 in order to correspond to a preferred grid dimension of corresponding outer wall bores 9 ', 11' of a hollow chamber profile 1 'to be connected. The arrangement of the fitting pieces 18 in the exemplary embodiment shown results in the preferred grid dimension a large distance between the center lines of the cylindrical centering lugs 20 in the diagonal of the cross section of the hollow chamber profile 1.

When using other grid dimensions, the fitting pieces 18 can be adapted, for example, by simply rotating 90 ° about the longitudinal axis of the hollow chamber 2. Fitting pieces 18 are also included cylindrical centering lugs 19, which correspond to the respective grid size and the dimensions of the bores 9, 11, possible. Furthermore, the profile has receiving bores 22 which serve to receive fitting pieces 18 'when a simple anti-twist device is sufficient. For this purpose, the fitting pieces 18 would then be omitted.

Further functions of the fitting pieces 18 and 18 'are shown and explained in the other figures.

FIG. 2 shows a perspective view of a hollow chamber profile 1 with outer wall bores 9, 11 and inner wall bores 10, 12 which are aligned therewith, the planes of the respectively aligned bores 9, 10 and 11, 12 being perpendicular to one another. The bores 9, 10, 11, 12 serve to receive connecting, fastening and / or centering and anti-rotation means, as shown and explained in the figures below.

Other hollow-chamber profile designs with different grid dimensions and different bore diameters are not shown.

A perspective view of two hollow chamber profiles 1, 1 'is shown in FIG. 3 as a system with connection, fastening and anti-rotation means in an exploded view for a right-angled connection.

The connecting and fastening means consist of cylindrical guide parts 13 with guide bores 14 which have not shown countersinks for the screw heads of the screws 17; furthermore from cylindrical threaded parts 15 with thread 16, as well as the fitting pieces 18, which serve to prevent the hollow chamber profiles 1, 1 'from rotating with one another. Their other functions are explained below.

To connect the hollow chamber profiles 1, 1 ', the threaded parts 15 are first inserted into the end bores 11 of the hollow chamber profile 1 and aligned so that the central axes of the threads 16 lie in the longitudinal direction of the hollow chambers 2. The fitting pieces 18 are introduced with their right-angled centering shoulders 20 into the hollow chambers 2 of the hollow-chamber profile 1, the right-hand side of the right-angled centering lugs 20 resting on the threaded parts 15 and their tops being flush with the front of the hollow-chamber profile 1 and not protruding therefrom.

The further hollow chamber profile 1 'to be connected is applied to the first hollow chamber profile 1 prepared as described above in such a way that the cylindrical centering shoulders 19 of the fitting pieces 18 are positively embraced by the corresponding outer wall bores 9' of the hollow chamber profile 1 '. This results in a particularly advantageous form-locking protection against rotation of the hollow chamber profiles 1, 1 ', which are connected at right angles to one another in this way.

For fastening the hollow chamber profiles 1, 1 'to one another, the guide parts 13 are now inserted into the bores 11' and aligned so that the longitudinal axes of their guide bores 14 are aligned with the longitudinal axes of the bores 9 '.

This is shown in FIG. 4 in the assembled state in a partially cut-open representation.

The cylindrical centering lugs 19 of the fitting pieces 18 have a cylindrical recess on their upper side, which is not is shown. This corresponds to the outer diameter of the guide parts 13, which are positively received in these recesses in the assembled state.

The non-positive fixation of the to be connected

Hollow chamber profiles 1, 1 'are carried out by screws 17 which engage through the bores 9' through the guide bores 14 of the guide parts 13 and through the guide bores 21 of the fitting pieces 18 into the threads 16 of the threaded parts 15 and are tightened through the bores 9 'by means of a suitable tool , This results in a non-positive and non-positive connection between the hollow chamber profiles 1, 1 ', which is centered at the same time, as described further below.

The guide parts 13 and threaded parts 15 can be made in one piece and / or in several parts depending on the profile width and intended use. They are received by at least two bores 9-9, 9-10, 11-11, 11-12 and fully encompassed such that the cylindrical body penetrating the bores corresponds to the bore diameters and penetrates the bores in their entire or approximately their entire length. In the exemplary embodiment shown, the guide parts 13 and threaded parts 15 overlap the entire width of the hollow chamber profile 1, 1 ', in this embodiment they have two outer wall bores 11, 11' and one inner wall bore 12, 12 ', i.e. a total of three bores 11-12-11 , 11 '-12' -11 'are included and fully embraced.

The heads of the screws 17 are received in counterbores (not shown) of the guide bores 14 of the guide parts 13, as a result of which the hollow chamber 2 sections lying above remain free for receiving further connecting and / or fastening means. At the same time, this results in and through the guidance of the screws 17 in the guide bores 21 of the fitting pieces 18, a centering of the guide parts 13 and thread 15 such that they are always included in both outer wall bores 11, 11 'in their entire or approximately entire length to the same extent and be fully embraced.

The fitting pieces 18 thus fulfill a triple function: a) centering the connecting and fastening means 13, 15, 17, b) preventing the hollow chamber profiles 1, 1 'from rotating against one another, c) centering the hollow chamber profiles 1, 1' from one another. For non-right-angled connections, for example overlaps, the fitting pieces 18 can be fully cylindrical. In the case of applications with low precision, the fitting pieces 18 can also be omitted.

The invention is not limited to the exemplary embodiments shown. In order to implement a simple anti-twist device, as shown in FIG. 5, the fitting pieces 18 ′ are arranged in the receiving bores 22. The adapters 18 'are, for example, dowel pins, which are inexpensive to obtain as standard parts. It can also be adapter sleeves or the like.

In view A, FIG. 6 shows further exemplary arrangements of hollow chambers 2 to hollow chamber profiles 1 that the hollow chambers 2 are formed by inner walls 4 and by inner walls 4 and outer walls 3. Views B to D show that the hollow chambers 2 are formed by inner walls 4 and by outer walls 3, while view E represents a special form in which the hollow chamber 2 is formed by outer walls 3. Further embodiments are conceivable; the invention is not limited to the examples given.

Claims

claims

1. Hollow chamber profile system for precision superstructures for gauges, measuring and testing devices and devices of all kinds, with first holes arranged in a certain grid dimension

(9), with further second bores (11) arranged in the same grid dimension on a plane rotated from 90 ° to the plane of the first bores (9) for receiving connecting parts and / or fastening means with threads (16), whose diameter corresponds to the bores (9, 11), and are received in the screws (17), with a rectangular or square cross section, the outer walls (3) of which are perpendicular to one another (9, 11), characterized in that the Hollow chambers (2) are formed by inner walls (4) and by inner walls (4) and outer walls (3) or by outer walls (3), and the connecting and fastening means have guide parts (13) and fitting pieces (18, 18 ').

2. Hollow chamber profile system according to claim 1, characterized in that the inner walls (4) are at right angles to the outer walls (3) and are connected to them.

3. Hollow chamber profile system according to claim 1 or 2, characterized in that the inner walls (4) cross at right angles.

4. Hollow chamber profile system according to one or more of claims 1 to 3, characterized in that each hollow chamber (2) has recesses (5) on each of its inner sides.

5. Hollow chamber profile system according to one or more of claims 1 to 4, characterized in that the corners (6) of the outer walls (3) have cross-sectional enlargements.

6. Hollow chamber profile system according to one or more of claims 1 to 5, characterized in that the connection areas (7) of the inner walls (4) to the outer walls (3) have cross-sectional enlargements.

7. Hollow chamber profile system according to one or more of claims 1 to 6, characterized in that the crossings (8) of the inner walls (4) have cross-sectional enlargements.

8. Hollow chamber profile system according to one or more of claims 1 to 7, characterized in that the cross-sectional enlargements of the corners (6), connection areas (7) and crossings

(8) through the recesses (5) are formed.

9. Hollow chamber profile system according to one or more of claims 1 to 8, characterized in that the wall thicknesses of the opposing walls (3, 4) are the same size in mutually perpendicular sectional planes.

10. Hollow chamber profile system according to one or more of claims 1 to 9, characterized in that all hollow chambers (2) have the same cross section.

11. Hollow chamber profile system according to one or more of claims 1 to 10, characterized in that all inner walls (4) have the same profile.

12. Hollow chamber profile system according to one or more of claims 1 to 11, characterized in that the inner walls (4) to the outer wall bores (9, 11) have bores (10, 12) aligned.

13. Hollow chamber profile system according to one or more of claims 1 to 12, characterized in that the hollow chambers (2) in the longitudinal direction form a receptacle for connecting, fastening, guiding and centering means with a corresponding cross section.

14. Hollow chamber profile system according to one or more of claims 1 to 13, characterized in that the connecting, fastening and centering means from cylindrical guide parts (13), cylindrical threaded parts (15), fitting pieces (18, 18 ') and screws (17) consist.

15. Hollow chamber profile system according to one or more of claims 1 to 14, characterized in that the guide parts (13) and threaded parts (15) of outer wall bores (9, 11) and inner wall bores (9, 10) are taken up with a corresponding cross section and fully encompassed.

16. Hollow chamber profile system according to one or more of claims 1 to 15, characterized in that the guide parts (13) and threaded parts (15) each of at least two aligned outer wall bores (9-9, 11-11) and / or inner wall bores

(10-10, 12-12) and / or outer wall and inner wall bores (9-10, 11-12) with a corresponding cross-section are recorded and fully encompassed.

17. Hollow chamber profile system according to one or more of claims 1 to 16, characterized in that at least two fitting pieces (18) for preventing rotation of hollow chamber profiles (1, 1 ') are arranged with one another between guide parts (13) and threaded parts (15), or that at least two adapters (18 ') for securing the hollow chamber profiles (1, 1') to one another are arranged in receiving bores (22).

18. Hollow chamber profile system according to one or more of claims 1 to 17, characterized in that the fitting pieces (18) for securing against rotation of hollow chamber profiles connected at right angles

(1, 1 ') are inserted at the end into the hollow chambers (2) of a hollow chamber profile (1) and for this purpose a rectangular centering projection (20) corresponding to the profile of the hollow chamber (2), a cylindrical centering projection (19) arranged thereon with the same cross section as the outer wall bores

(9, 11) and a continuous guide bore (21) coaxial to the cylindrical centering projection (19).

19. Hollow chamber profile system according to one or more of claims 1 to 18, characterized in that the cylindrical centering projection (19) with guide bore (21) of the fitting pieces (18) is arranged off-center of the right-angled centering projection (20).

20. Hollow chamber profile system according to one or more of claims 1 to 19, characterized in that the cylindrical centering projection (19) of the fitting pieces (18) has a cylindrical recess, the radius of which corresponds to that of the guide parts (13), and the central axis perpendicular to the central axis of the cylindrical centering projection (19).

21. Hollow chamber profile system according to one or more of claims 1 to 20, characterized in that the fitting pieces

(18) to prevent rotation of hollow chamber profiles (1) from each other in one piece as cylindrical centering parts with a guide bore, a cylindrical recess on one or both end faces corresponding to the radius of the guide parts (13) and / or the threaded parts (15), and their central axis perpendicular to Center axis of the cylindrical fitting is.

22. Hollow chamber profile system according to one or more of claims 1 to 21, characterized in that the fitting pieces

(18) form the three functions of centering the connecting and fastening means (13, 15, 17), securing against rotation and centering the hollow chamber profiles (1, 1 ') with one another.

23. Hollow chamber profile system according to one or more of claims 1 to 17, characterized in that the fitting pieces

(18 ') for securing against rotation of right-angled hollow chamber profiles (1, 1') are inserted into the receiving bores (22) of a hollow chamber profile (1, 1 ').

24. Hollow chamber profile system according to claim 18, characterized in that the fitting pieces (18 ') are cylindrical pins and / or fitting pins and / or fitting pins and / or clamping sleeves.

25. Hollow chamber profile system according to one or more of claims 1 to 24, characterized in that the cylindrical guide parts (13) and threaded parts (15) are made in one or more pieces.